Summary: Great "little" receiver. I first looked to purchase a new receiver because of a confined space I had in my entertainment center above the TV, very nice build in area in the house we bought but not much space/ventilation for the receiver and my HK was getting hot! I saw how slim this receiver was and the outstanding reviews, never owned a Marantz before. This thing fit perfectly and runs super cool, never heats up the enclosed area.
Summary: This is a great receiver for the money. I really wanted a high end two channel stereo amplifier but my wife wanted a new surround system for her movies. The Marantz unit was a great compromise. The two channel performance is outstanding, reproducing CD's and compressed music with accuracy and presence. The surround mode works great with movies.
Summary: This has been a great receiver so far. Very easy to set up and the sound that it produces has been fantastic. The only knock, and this is probably just personal preference and maybe I didn't do it exactly right, is the back speakers over-power the center speaker after I sued the auto set-up. It was hard to hear much of the conversation is some movies because of this issue. But, it was easy enough to adjust manually and movies and TV sound great through my Polk Speakers.
Summary: Couldn't be happier with this AVR. I have the Energy Take Classic 5-pack and Energy EW-100 sub for speakers, and they have come alive with the NR-1403. Audyssey setup was very good with only a minor crossover tweak needed for my surround speakers. As others have said the sound is on the rich, mellow sound and the soundstage feels all enveloping. I haven't been able to "max" out the volume, because it would be ear splittingly loud. PLENTY OF POWER for my 20x12 room.
Summary: Very impressed! Awesome receiver. First time with Marantz. Bought this receiver as a replacement of an Onkyo to hook up with my Mirage speakers + Polk Pro Sub. I can say the Marantz performs way, way better than the Onkyo. Marantz has an expectacular sound clarity + richness. Every detail is present, and it is able to match perfectly satelites with sub. Even the image seems a lot sharper. Setup is very easy and menus are very intuitive.
Summary: I purchased this for a mid-size home theater room. Don't the the 50watt rating scare you away from buying this unit. It has plenty of power for what we need and has great sound in a 5.1 system. If you're looking for a receiver without all the frills of internet, airplay, etc. (which we were since we have that capability with other components in the system, this is a low priced great way to go.
Summary: Probably a bit early for me to be reviewing this since I just got it yesterday. But here goes anyways. I bought this because I thought my Yamaha RXV667 receiver had a bad input which was causing my sub to produce low sound. Turns out it was the sub, not the receiver. I really should just return this, but I'm keeping it, and there is nothing you can do about it. The Yamaha is 90 watts per channel (vs. 50 on this), 7.2 with zone 2 and 5.1 preout.
Summary: Not a single bad thing can be said about this receiver, please take notice I'm an ignorant on the subject but I read for a long time trying to decide the best route, although there were some yamaha or pioneer models I decided I liked this one the most (aesthetics mostly), and not being really stomped by any of those models I got this. No regrets. Also, because I bought some Boston Acoustics speakers I thought it could help keeping it in the family.